tunneling: Clear IP control block in one memset.

We currently clear both the members of the IPCB individually before
entering the IP stack.  It's simpler and more robust to just clear
the entire structure.

Suggested-by: Ben Pfaff <blp@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>

diff --git a/datapath/tunnel.c b/datapath/tunnel.c
index 4a60fa7..f0ae98d 100644 (file)
--- a/datapath/tunnel.c
+++ b/datapath/tunnel.c
@@ -1099,9 +1099,7 @@ static int send_frags(struct sk_buff *skb,
                int frag_len = skb->len - mutable->tunnel_hlen;
 
                skb->next = NULL;
-
-               memset(&IPCB(skb)->opt, 0, sizeof(IPCB(skb)->opt));
-               IPCB(skb)->flags = 0;
+               memset(IPCB(skb), 0, sizeof(*IPCB(skb)));
 
                err = ip_local_out(skb);
                if (likely(net_xmit_eval(err) == 0))